GD-J10(b)/KF,GD-J16(b)/KF,GD-J25(b)/KF,GD-J40(b)/KF,手动高真空挡板阀(带波纹管密封) GD-J10(b)/KF,GD-J16(b)/KF,GD-J25(b)/KF,GD-J40(b)/K 无锡市昌林自动化科技有限公司